Further Development and New Concepts for Bionic Sonar. Volume 2. Spectrogram Correlation.

Abstract

This report documents theoretical studies of models of echolocation signal processing of dolphins and the testing of the effectiveness of these models for detecting and classifying small objects in introduced noise and reverberation. In this volume it is demonstrated that spectrogram correlation is a locally optimum detection operation for low SNR signals that have been passed through a random, time-varying process in Gaussian noise. For non-Gaussian noise local optimality is preserved by correlating stored data with a modified spectrogram. Detection and estimation performance of the spectrogram process is predicted and compared with psychophysical data. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1978
Accession Number
ADA072941

Entities

People

  • R. W. Floyd
  • Richard A. Altes

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Signals
  • Bandwidth
  • Biosonar
  • Brain
  • Communication Systems
  • Detection
  • Detectors
  • Doppler Effect
  • Estimators
  • Nervous System
  • Pulse Compression
  • Random Variables
  • Scattering
  • Signal Processing
  • Sine Waves
  • Stochastic Processes
  • Two Dimensional

Fields of Study

  • Engineering

Readers

  • Acoustical Oceanography.
  • Mathematical Modeling and Probability Theory.
  • Radio communications and signal processing.

Technology Areas

  • Biotechnology